The widespread presence of mobile phones in prisons

signal jammer
　　Thousands of mobile phones are seized in prisons in the UK every year, but many more are still illegally entered through smuggling, throwing, etc. cell phone jammer These mobile phones are a valuable resource for prisoners, and the cost of renting a mobile phone is as high as £400 to £1,000. GPS jammer In 2013, a total of 7,451 mobile phones and SIM cards were seized in prisons in England and Wales. These phones are used to plan a variety of criminal activities, including murder, prison breaks, and smuggling weapons and drugs.

　　Case study: Northumberland Prison

　　Northumberland Prison is a typical example of the mobile phone problem. Prison management company Sodexo said that despite the efforts of staff to use various technical and intelligence means to prevent illegal items from entering the prison, the effect is limited. One prisoner's mother said, "This place is full of mobile phones." Glyn Travis of the Prison Officers Association (POA) pointed out that drugs and mobile phones are thrown into prisons at will, and even delivered by drones, which undermines the prison's external security line.

　　Limitations of technical means

　　Although prison management departments have tried to use a variety of technical means, such as mobile phone jammers and signal grabbers, these technologies have many challenges in practical application.

　　Environmental complexity: The external environment of prisons is complex, and the effectiveness of jammers and grabbers is limited. For example, Sodexo, the management company of Northumberland County Prison, said that despite the use of a variety of technical means, the effect was not ideal.

　　Technical limitations: Existing jammers and grabbers have deficiencies in coverage, signal strength, etc., and it is difficult to completely block mobile phone signals. Some prisoners may bypass these technical means by adjusting the position of their mobile phones or using signal enhancement devices.

　　Legal and ethical issues: The use of jammers and grabbers may affect the communication services of legal residents around the prison, involving legal and ethical issues. In addition, the legal right of prisoners to communicate in emergencies also needs to be guaranteed.

　　Legal and management challenges

　　Although there are regulations prohibiting prisoners from using mobile phones, there are many difficulties in the actual implementation process. Legal and regulatory authorities need to strengthen monitoring and punishment of illegal items entering prisons to ensure that prisoners do not continue to engage in criminal activities while serving their sentences.

　　Future solutions

　　Develop more advanced technical equipment: More resources need to be invested in developing more effective mobile phone jammers and signal grabbers to improve coverage and signal jamming capabilities. Future equipment should have stronger intelligent functions and be able to automatically adjust the signal jamming range to ensure accurate strikes against illegal mobile phones.